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Mobil Delvac™: The new gold standard in engine oil.

The launch of new Mobil Delvac diesel engine oils can help you reach your business goals. These new CK-4 and FA-4 oils outperform current CJ-4 oils; they are designed to help increase oil drain intervals (ODIs) and boost uptime. Learn more about new Mobil Delvac heavy-duty diesel engine oils below. If you can’t find what you need here, please reach out to authorized distributors for more Proposed Category 11 (PC-11) information.

Improved performance with Mobil Delvac™ heavy-duty diesel engine oils

New PC-11 (CK-4, FA-4) Mobil Delvac™ engine oils were compared to CJ-4 Mobil Delvac™ 1300 Super and Mobil Delvac™ Elite engine oils. The test results showed that the PC-11 oils provided 20 percent improved wear protection,* 50 percent improved oxidation resistance† and 80 percent improved high-temperature viscosity control.† In addition, the PC-11 oils showed enhanced fuel economy potential (for FA-4 products only) and protection beyond original equipment manufacturer (OEM) ODIs.


Chart showing the new CK-4 and FA-4 Mobil Delvac™ heavy-duty diesel engine oils Chart showing the new CK-4 and FA-4 Mobil Delvac™ heavy-duty diesel engine oils

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New Mobil Delvac heavy-duty diesel engine oils

Bottle of Mobil Delvac 1™ advanced full synthetic See engine oils

Mobil Delvac 1™
Mobil Delvac 1 is an advanced full synthetic diesel engine oil that provides extended drain capability and exceptional low-temperature performance with the potential to improve fuel economy.‡ It meets or exceeds the requirements of OEMs, and its state-of-the-art technology provides:

  • Outstanding performance at extreme temperatures
  • Our best cold-weather protection
  • Our best protection for drivers with extended drain intervals
  • Enhanced emissions systems protection in a variety of severe conditions
Bottle of Mobil Delvac™ premium synthetic blend See engine oils

Mobil Delvac™ Extreme
Mobil Delvac Extreme is a premium synthetic blend, high-performance diesel engine oil that helps extend engine life while providing long drain capability for modern diesel engines operating in extreme conditions. Its boosted formulation provides:

  • Unsurpassed oxidation stability§
  • Superior engine protection
  • Excellent anti-wear performance
  • Excellent soot and viscosity control
Bottle of Mobil Delvac™ premium conventional See engine oils

Mobil Delvac™ 1300 Super
Mobil Delvac 1300 Super is an advanced diesel engine oil that meets or exceeds OEM requirements and delivers high performance in both on- and off-highway applications. Its carefully tailored formulation provides:

  • Performance for up to 50 percent beyond OEM recommended ODIs**
  • Outstanding high-temperature performance
  • Superior oxidation stability
  • Excellent soot and viscosity control

*Based on a comparison of Cummins ISM and Mack T-12 engine test results.
†Based on a comparison of Volvo T-13 engine test results.
‡Compared to a 15W-40 conventional engine oil. Actual savings are dependent upon vehicle/engine type, outside temperature, driving conditions and your current engine oil viscosity.
§Based on performance in the Volvo T-13 engine test.
**Results may vary based on vehicle/engine condition, driving and environmental conditions. Consult OEM or ExxonMobil before implementing extended ODIs.

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